Abstract:
:Real-time two-dimensional echocardiographic studies of the mitral valve in short-axis view were obtained from 10 normal subjects. Stop-action frames of the video-taped echocardiograms were then photographed to obtain diastolic cross-sectional images of the valve at maximal opening. Tracings from the interior of the leaflet echoes were then digitized to provide the perimeter and area of the mitral orifice. From the perimetric data, boundary integration was used to numerically calculate the orifice area corresponding to an elliptical boundary, for aspect ratios ranging from 0.5 to 1.0 (circle). It was found that the mean orifice areas determined echocardiographically and numerically are equal for an aspect ratio of 0.42. For aspect ratios greater than this value, the elliptical areas are larger, while for smaller aspect ratios, the elliptical areas are smaller.
journal_name
Acta Cardioljournal_title
Acta cardiologicaauthors
Hearn TC,Goldblatt E,Mazumdar J,Fazzalari NL,Nandagopal Dsubject
Has Abstractpub_date
1983-01-01 00:00:00pages
199-208issue
3eissn
0001-5385issn
1784-973Xjournal_volume
38pub_type
杂志文章abstract:OBJECTIVE:We investigated the survival of patients who had undergone elective reconstruction of the ascending aorta for degenerative aneurysms. The long-term survival was compared to an age- and sex-matched case-control population. An analysis of risk factors, influencing survival was made. METHODS AND RESULTS:From Ma...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.68.4.2988887
更新日期:2013-08-01 00:00:00
abstract::A 15-year-old boy who was admitted to the neurology department had multiple cerebral infarcts on cranial magnetic resonance imaging. A transthoracic echocardiogram revealed myocardial thickening and apical thrombus in the left ventricle suggesting Loeffler endocarditis. There was remarkable hypereosinophilia on the ha...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.65.5.2056245
更新日期:2010-10-01 00:00:00
abstract:OBJECTIVE:This study sought to compare characteristics and management of myocardial infarction in men and women, and whether a difference in management would translate into a difference in in-hospital mortality. METHODS AND RESULTS:Data were prospectively collected in 2,519 patients (801 women) admitted in all hospita...
journal_title:Acta cardiologica
pub_type: 杂志文章,多中心研究
doi:10.2143/AC.56.3.2005637
更新日期:2001-06-01 00:00:00
abstract::Veno-Venous Extracorporeal Membrane Oxygenation (VV-ECMO) provides a bridge to recovery in patients with acute respiratory failure due to the acute respiratory distress syndrome (ARDS). Survival in ARDS has improved over 15 years, and VV-ECMO may rescue even the most severe of these patients. Predictors of survival on...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/00015385.2020.1841971
更新日期:2021-01-04 00:00:00
abstract:BACKGROUND:Available clinical and angiographic scoring systems fail to predict clinical outcomes in real-world patients undergoing revascularization of the unprotected left main coronary artery (ULMCA). METHODS:We prospectively assessed major adverse cardiac and cerebrovascular events (MACCE) in a real-world populatio...
journal_title:Acta cardiologica
pub_type: 杂志文章,多中心研究
doi:10.1080/ac.67.5.2174124
更新日期:2012-10-01 00:00:00
abstract:AIMS:We retrospectively followed 250 patients who started dialysis between 2005 and 2009 to clarify the prevalence, the prognosis and the prescribed heart failure treatment of systolic heart failure patients on dialysis. METHODS AND RESULTS:This cohort was divided according to left ventricular ejection fraction (LVEF)...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.68.1.2959632
更新日期:2013-02-01 00:00:00
abstract:OBJECTIVE:This study evaluated autonomic nervous system function in 5 young (6-10 years old) and 5 older (10-15 years) children with recurrent episodes of neurally mediated syncope and a positive tilt-test result, 10 with syncope but a negative test result and 30 age-matched healthy volunteers. METHODS:Time- (SDNN, SD...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.55.3.2005734
更新日期:2000-06-01 00:00:00
abstract:OBJECTIVE:Cigarette smoking increases the synthesis of angiotensin-1 converting enzyme (ACE) and induces oxidative modifications of the apolipoprotein E (apo E).Thus we explored the gene-environment interactions between APOE gene epsilon and ACE gene insertion/deletion polymorphisms and cigarette smoking in coronary ar...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.63.6.2033392
更新日期:2008-12-01 00:00:00
abstract:BACKGROUND:The renin-angiotensin-aldosterone system (RAAS) plays an important role in blood pressure regulation, left ventricular and vascular structure. Some hypertensive patients develop left ventricular dilatation and heart failure symptoms while others are relatively less affected. The purpose of our study was to d...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.61.1.2005137
更新日期:2006-02-01 00:00:00
abstract::The combination of coarctation of the aorta in the presence of severe aortic insufficiency poses a serious clinical problem. Although successful single- and two-stage repair for combined coarctation in the presence of severe aortic regurgitation has been described, the surgical management of this lesion remains partic...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
abstract:UNLABELLED:OBJECTIVE; ; The objective of this study was to identify developmental changes in vascular smooth muscle cells (VSMC) during aneurysm formation using an elastase-induced rabbit carotid artery aneurysm model. METHODS:- Aneurysms were induced in carotid arteries of rabbits by exposure to elastase. Tissues fro...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.65.5.2056235
更新日期:2010-10-01 00:00:00
abstract::We describe two cases of Duchenne's cardiomyopathy with severe cardiac dysfunction, sporadic episodes of myoglobinuria induced by effort and increased levels of serum creatine kinase. Very mild signs of skeletal myopathy were clinically evident. Left ventriculography showed diffuse severe hypokinesia. Skeletal muscle ...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.61.4.2017311
更新日期:2006-08-01 00:00:00
abstract::Stereological methods under light and electron microscopy have been used to study the ventricular myocardium of rats exhausted by swimming exercise. The proportion of myocardial cell/interstitium diminishes with the exercise. This result is interpreted as a consequence of an intercellular edema which becomes more pron...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:
更新日期:1984-01-01 00:00:00
abstract:OBJECTIVE:Presence of coronary artery disease (CAD) also in subjects without traditional risk factors leads to a search for new risk factors. Tenascin-C (TNC), an extracellular matrix glycoprotein is normally found in very low concentrations in tissues and serum of adults, whereas its expression is enhanced in case of ...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.70.6.3120174
更新日期:2015-12-01 00:00:00
abstract:OBJECTIVE:The main function of hepatic lipase (HL) with respect to high-density lipoprotein (HDL) is hydrolysis of phospholipids and triglycerides. The -514C-->T polymorphism in the promoter region of the hepatic lipase gene affects HL activity. We aimed to investigate the association between the frequency of the -514C...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.63.2.2029528
更新日期:2008-04-01 00:00:00
abstract::After D.C. countershock to terminate cardiac arrhythmias, in 3 out of 8 patients studied, an increase in both plasma myoglobin (Mb) and CK-MB (assessed by radioimmunoassay) was found. In 2 patients there was an increase of only plasma Mb and in 1 an increase of only CK-MB. In 2 cases no increase of either parameters w...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:
更新日期:1984-01-01 00:00:00
abstract:BACKGROUND:Despite the availability of guidelines for preoperative cardiology consultations, their efficacy in real clinical practice remains unknown. Furthermore, there are concerns that overused cardiology consultations can lead to unnecessary investigations, prolonged hospital stays, and even cancellation of necessa...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.66.4.2126592
更新日期:2011-08-01 00:00:00
abstract::Background: Quality indicators (QIs) are used to measure and evaluate quality of care. However, QIs to evaluate care for HF patients in general practice in Belgium are lacking. Therefore, this study aimed to determine which QIs, rooted in the electronic health record (EHR), are useful to monitor quality of care for pa...
journal_title:Acta cardiologica
pub_type: 共识发展会议,杂志文章,评审
doi:10.1080/00015385.2018.1492659
更新日期:2019-08-01 00:00:00
abstract::Conventional repair of pararenal aortic aneurysms has been a technically challenging operation, with a significant morbidity rate of 28-35%. Endovascular stent grafting requires satisfactory landing zones for stent graft anchoring. Therefore, pararenal abdominal aortic aneurysms are usually contraindicated for this pr...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.69.4.3036661
更新日期:2014-08-01 00:00:00
abstract:UNLABELLED:We describe the clinical and echocardiographic features in 12 patients with hydatid cyst of the heart who were screened between 1985 and 2001. Presenting symptoms have a wide variability but the main symptom was precordial pain. The electrocardiogram was always abnormal and showed T wave inversion in 8 cases...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.60.1.2005047
更新日期:2005-02-01 00:00:00
abstract::Epidemiological information on the prevalence, incidence and natural history of intermittent claudication and peripheral vascular disease is limited, partially by the limitation of techniques of their study. The available data from the literature are review and supplemented by results from an on-going survey the ankle...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:
更新日期:1979-01-01 00:00:00
abstract:OBJECTIVES:The role of adenosine as a cardioprotective agent is well known and recent experimental studies suggest that impairment of adenosine-related signal transduction contributes to the pathophysiology of chronic heart failure. The recent observation of an association between ADA, genetic polymorphism and coronary...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.69.1.3011343
更新日期:2014-02-01 00:00:00
abstract:OBJECTIVE:Red cell distribution width (RDW) is a measure of variation in the volume of circulating erythrocytes and has recently emerged as a powerful prognostic marker in heart failure. We studied the effect of 5-month, home-based cardiac rehabilitation on RDW. METHODS AND RESULTS:Sixty-two patients (age: median 67 y...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.68.6.8000009
更新日期:2013-12-01 00:00:00
abstract:OBJECTIVE:The aim of this randomized trial was to evaluate whether omission of heparin infusion after successful coronary interventions increased the incidence of ischaemic complications. Continuous heparin infusion after percutaneous coronary interventions could increase the occurrence of bleeding; however, the probab...
journal_title:Acta cardiologica
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.2143/AC.64.1.2034364
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVE:This study aimed at determining the effect of percutaneous ASD closure on the AV conduction. Percutaneous closure of ostium secundum atrial septal defects (ASDs) has been widely accepted and has become the standard treatment of this malformation. However, some complications have been reported. Because of the ...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.66.3.2114130
更新日期:2011-06-01 00:00:00
abstract::Aims: Response to cardiac resynchronisation therapy (CRT) in patients with heart failure depends on the degree of correction of electromechanical dyssynchrony between the left and right ventricles (LV, RV). It is not known whether chronic programming of interventricular (VV) intervals based on characterisation of myoc...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/00015385.2019.1690261
更新日期:2019-11-14 00:00:00
abstract::We present a 64-year-old woman who was brought to the emergency department after suffering a motor vehicle accident, involving multiple soft tissue and bone trauma. Even though she was free from cardiovascular symptoms for the last three years, her past medical history of aorto-coronary bypass surgery prompted preoper...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.2143/AC.58.2.2005271
更新日期:2003-04-01 00:00:00
abstract::The Cardiology Foundation supported by the perspicacious Princess Lilian was created in 1958. As an introduction to this symposium, the challenges that the cardiologist and surgeon encountered in 1958, are recalled as well as the essential problems requiring solutions in that era of evolving cardiac surgery. ...
journal_title:Acta cardiologica
pub_type: 历史文章,杂志文章
doi:
更新日期:2004-01-01 00:00:00
abstract::European Society of Cardiology (ESC) National Society Cardiovascular Journals (NSCJs) are high-quality biomedical journals focused on cardiovascular diseases. The Editors' Network of the ESC devises editorial initiatives aimed at improving the scientific quality and diffusion of NSCJ. In this article we will discuss o...
journal_title:Acta cardiologica
pub_type: 杂志文章,评审
doi:10.1080/ac.68.5.2994483
更新日期:2013-10-01 00:00:00
abstract::Left ventricular aneurysms are common in clinical practice. Although their underlying aetiology is generally clear by the clinical context, it can be hard to define the exact cause in some cases. We report a case of a patient in whom cardiac MRI provided important information about the differential diagnosis of a left...
journal_title:Acta cardiologica
pub_type: 杂志文章
doi:10.1080/ac.66.4.2126612
更新日期:2011-08-01 00:00:00